Wheel-truing device



Aug A. M. DRAKE WHEEL TRUINGDEVICE Filed March a. 1926 fryer/for I 14/0? [Yam/Fe lll I t Patented Aug g, 1927.

' ing theface of a grinding wheel] and; for providing an accurate cyl ndrlcal surface thereoi'i; It 's dQSIg'DGCl to' form part oi the M ssAorrUsE'rrs.

WHEE -ravine nEvcn.

it Application fired man s iegef 'seriai jiio 93,001, 1

1 This inventi'on r-elates to a device for'trupe'rman'ent structure v a type of grinding machine in whi'clr'accuifate facing "oi the [wheel is et'great imp'crt'ancel (I Y An important featureof my i lates to theprov'i'sion or a strong andr'ig-id support fora diamond point or other wheel dressing ft'oolby' which the jtool. will be i firmly supported for movement-axially of the machine. Another feature of my improved construction is the provision of; a

:- radially adjustablesupport for said tool, said sup'portbeingof an im 'arove'd'toii'm and preferably including-a wheel guard formed as an integral part; thereof. v lVly invention further relates to arrangeme'nts and'combinations of parts-which will be hereinafterdescribed{and more p'articu-,

'- clampingscrews26'. This provides for j rough or approximate adjustment of: the:

wheel dressing tool which is preferably .1

larly pointed 'ou t 'in; the appendgd' li V A prefer'ed form of the invention is show in the drawings in which Fig. 1 is a front ele'vatlon of a v-portion of a grinding machine having} myimproved truing device embodied therein;

- Fig. '2 is ase'c'tion'al front'elevati'on of the truing device; Q V q 3is an end viewthereof, looking" in the direction'of the arrow 3 in Fig. 1;

Fig.4; is a detail sectional plan view,

taken aleng theline 4t 'inIFig. 3 5. and

Fig. 5' is sectional end elevation, taken along the line 55 in Fig. 2.;

Referring to the drawings5l haveshown a grinding wheel WV mounted on a 'sh aft 'or spindle 1O rotatabl'e'in a wheelshaft bearing member 11, slidable axially upon or secured to a wheel carriagell which in turn 7 is slidable transversely on a grinding machine frame 12. j These parts in themselves iorm no part of my present invention which relates .more

particularly to an improved truing device to be now described. 4

My improved truing device comprises a supporting member 13 which is preferably tubular and of relatively large diameterand heavy construction, so thatthe wheel dressing tool supported thereon will be held with great rigidity. The memberl is slidable in a bearing block or head'15 through which it extends. A casing or cover 16 may be secured to the head to enclose and pro- '13 asthe truingfdevic'e is moved toward" bearinglieadi; P

' ALDEN Iii. DRAKE, 0'11summing.MAssaeHes Tes,.-essenc oem iim I 1 TAP were con-ronarromor GBEENFIEIQD; MASSAGHUSEEETS; nconronnrionwon" tect the rear end of the supporting member,

A rack-bar 1 p (is secured to the side oi jthe vnieinber 13 'and' fits w'ithin'a corresponding recess in the head 115fas indicated in Fi'g. 5.

The rack bar thus acts asya guide for the member 13," preventii'i'g 1 angular displacen'ient' thereof. A plni'onj 18 on a. sl'i-aft' 1'9 engages the rack bar forfmeving member 13" axially; The shaftlai's mounted in abearing i nfthe head 15"a nc1lis jpiio- Videdj ith a hand wheelf20 iterf rotation thereof;- The member l3ji thusvery firmly and rigidjly supported in the bearinglrejad iii 15 which is 'orei'erably fsecurecl by 10013122 to the'wheel shaft bejaring member '11.; r

A tcol"head' '24s"(Fig. 4;) is meunted in guide-ways 'on the'end' of'the member 13 for vertical sliding movement thereon and may be secured in adjusted position by 7 formed as. a diamdn point 2) seable i-n'a recess 32 in a head 241.

*cu'red to thelower end of'a plunger slid-y p p screw 33 "isprovidedfor" accurate adjustment of tl1'ewhee1;dr gi.n tool 30 .1n the head '24 anda screw 'o'rlstild' 3' 1 (Fig; engages a slot or 'key wayin'ftl e plunger 31' and prevents, angular? disp-lace- Inent therecf; The lower end 'of thef head provided with a' lateral-,sjegrrrenta-l pro; jeCtlOil' 40"wh1c'h acts'as 'a' wheel guard ngthe truing operationand also protects the diamond point froinfaccidental injury. f

'Having' described the construction offmy improved wheel truing devicei'it will be seen that the device is particularly noteworthy for the firm and. rigid construction of ther supporting member and for the simplicityof I allparts associated therewith. The member 13 isimounted in accurate parallel relation 1 it -to' the wheel shaft or spindle 10; so that'the diamondpoint S-OvVhen movedfaxiallyby I theghand Wheel 20 will dress" the wheel to accurate cylindrical-form; The diamond pointmay be fed'downward as needed by the adjusting screw 33 andthedeVice' may,

be adapted to wheelsof different diameter.

my invention and the advantages thereof, I do not Wish to be limited to the detailsherein disclosed other- :What vI claim is Wise than as set forth in the, claims; but

1. Ina grinding machine' havingqa Wheel carr age,ia Wheel, a Wheel shaft, and a Wheel shaft bearing member mounted on said car-V v r1age,.a Wheel dressing tool, a heavy'rigld supporting member for sald tool, a bearing head for said supporting member mounted on sa1d carriage ad acent said heel shaft bear ng ,member'and 1n which'said support- .jving member is constantly guided for movement parallel to and axially of said Wheel shaft, and manual means to move said sup porting member in said bear ng head.

2. In a grinding machine having a Wheel carriage, a Wheel, a Wheel shaft, and a Wheel shaft bearing member mounted on said carriage, a heel dressing tool, a heavy rigid supporting member for said tool a bearing head for said supporting member mounted on said carriage and in which said support; ing member is constantly guided for movement parallel to andaXially of, said Wheel shaft, a rack bar secured to said supporting member, andamanually'operable pinion en- 1 gaging said'rack barand effective to move said heel dressing tool across the grinding I 3. In a grinding machine havinga Wheelwheel.

carriage, a Wheel, a'whee'l shaft, and a Wheel I shaft bearing member. mounted on said carriage, a Wheel dressing tool, a heavy rigid supporting member of circular section for c sa d tool, a'bearing head for sald support,

ingjmember mounted on said carriage and fin which said supporting member is guided for movementparallel toand axially of said Wheel shaft, a rack bar-secured to said-supporting member and effective to prevent. angulardisplacement thereof, and apinion enfgaging said rackbar, manual rotation of said vpinion Causing axial movement of said 7 supporting member and said heel dressing tool. I p I 4c. In a grmdlng machine, a frame, a

wheel shaft rotatably mounted therein, a

' vvheel dressing tool, a hollow cylindrical tubular supporting member for said dressing tool, said member" being of relatively Wheel dressing tool, a tubular supporting member for saiddressing tool, said member being slidable in a bearing adjacent said heel shaft and in a path parallel to and axial of said Wheel shaft, and a hollow cas 111g secured to said frame and receivlng and protecting the endof said supporting member When the Wheel dressing tool approaches the bearing of said supporting member;

6. A Wheel truing device as set forth in claim 1, in which a tool head is secured to the end of said supporting member by'a bolt 7 and slot connection affording rough adjustment of said head toward and from the Wheel, and in Which a Wheel dressing tool is slidably mounted in said head and is also independently adjustable toward and from' the Wheel. I a

7. Av Wheel dressing device as set forth in clai1n1,i11 Which a tool head is secured,

for adjustment toward and from the Wheel on the end of said supporting member, and

in which said tool head has a substantially segmental projection effective to act as a guard for the grinding Wheel and dressing tool.

8 A Wheel dressing'device as set forth in cla m 1, 1n Wh ch a tool head is secured for adjustment toward and from the Wheelon the end of said supporting member and in Which a Wheel dressing tool is slidably .mounted in said head but is held from angular movement thereimand in which an ad ustmg screw is provided, effective to move said Wheel dressing tool-insaid' tool head toward and from the Work.

7 In testimony whereof I have hereunto affixedgmy signature. r c v M. DRAKE V 

